ossp-uuid missing from one click windows x64 builds

I just installed a copy of PostgreSQL 9.0 on Windows 7 x64 using the one
click installer, and found that the uuid-ossp contrib module is missing.

I took a look at the zip archives, and the uuid-ossp files are in the 32 bit
build, but not the 64 bit build.

Is this an oversight, or is there some problem with the library on Windows
x64?